Chemistry, 27.09.2020 23:01 brapmaster764

Marian claims that Food A has slightly more than three times the Calories as Food B. Johan claims that Food B has more Calories. Evaluate both claims. How could both be justified?

Marian claims that Food A has slightly more than three times the Calories as Food B. Johan claims t

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Answer from: winnie45

Explanation:

In order to justify Marian's statement we have to look at the '' Amount per serving calories'' ⇒

In food label A we can see that this value is 160 calories

In food label B we can see that this value is 50 calories

⇒ 160 calories is slightly more than three times 50 calories

Otherwise If we want to justify Johan statement we need to look at the '' serving size '' ⇒

In food label A we can see that the serving size is 1 cup (237 mL)

In food label B we can see that the serving size is $\frac{1}{4}$ cup (56g)

Working with the information of the food label A we can write the following expression :

$\frac{1Cup}{160calories}=\frac{\frac{1}{4}Cup}{x}$ ⇒ Looking at the value of '''' ⇒

$x=160calories(\frac{1}{4})=40calories$

x=40calories

If we look at the same amount of portion volume :

In $\frac{1}{4}$ cup of food A we have 40 calories

In $\frac{1}{4}$ cup of food B we have 50 calories

We could conclude that Food B has more calories.

That's how both claims could both be justified.

Answer from: Quest

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

Answer from: Quest

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

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Marian claims that Food A has slightly more than three times the Calories as Food B. Johan claims th...

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